EP0713780B1 - Serial recording apparatus for bidirectional recording - Google Patents

Serial recording apparatus for bidirectional recording Download PDF

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Publication number
EP0713780B1
EP0713780B1 EP96200209A EP96200209A EP0713780B1 EP 0713780 B1 EP0713780 B1 EP 0713780B1 EP 96200209 A EP96200209 A EP 96200209A EP 96200209 A EP96200209 A EP 96200209A EP 0713780 B1 EP0713780 B1 EP 0713780B1
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EP
European Patent Office
Prior art keywords
recording
recording head
reference position
positional error
head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96200209A
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German (de)
English (en)
French (fr)
Other versions
EP0713780A2 (en
EP0713780A3 (en
Inventor
Kazuyuki Masumoto
Junichi Arakawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
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Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority claimed from EP91300699A external-priority patent/EP0440438B1/en
Publication of EP0713780A2 publication Critical patent/EP0713780A2/en
Publication of EP0713780A3 publication Critical patent/EP0713780A3/en
Application granted granted Critical
Publication of EP0713780B1 publication Critical patent/EP0713780B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J19/00—Character- or line-spacing mechanisms
    • B41J19/14—Character- or line-spacing mechanisms with means for effecting line or character spacing in either direction
    • B41J19/142—Character- or line-spacing mechanisms with means for effecting line or character spacing in either direction with a reciprocating print head printing in both directions across the paper width
    • B41J19/145—Dot misalignment correction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/05—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers produced by the application of heat

Definitions

  • the present invention relates to a serial recording apparatus and method for performing bidirectional recording upon reciprocal movement of a recording head.
  • a recording head In a conventional serial recording apparatus, a recording head is reciprocated to perform high-speed bidirectional recording.
  • a drive signal i.e., drive pulses when a recording head is to be moved using a pulse motor
  • a delay time occurs until the recording head reaches a target position. Print errors occur during bidirectional recording due to various types of electrical and mechanical variations.
  • the above conventional recording apparatus poses the following problems.
  • an ink-jet recording apparatus for causing a change in state (e.g., film boiling) of an ink by heat energy, for ejecting the ink to a recording medium by using bubbles generated by the change in state of the ink, and for recording a character or graphic image.
  • the size of a heating resistor (heater) arranged in each ejection port is considerably smaller than that of a piezoelectric element used in a conventional ink-jet recording apparatus. For this reason, a high-density multiple arrangement of ejection ports can be obtained, a high-quality recording image can be obtained, and characteristics such as a high-speed operation and low noise can be obtained.
  • an apparatus using a recording head which has an ink tank and is detachable from a carriage.
  • this ink-jet recording apparatus when bidirectional recording is performed to achieve recording at a higher speed, the following problems are posed.
  • JP-A-58-62084 describes a backlash correction device for a recording head of a serial printer wherein a positional error in bidirectional recording is determined on the basis of a positional error calculated from the detection by detecting means of the passing of the recording head in the forward and backward scan directions.
  • JP-A-63-15775 and JP-A-1-281973 describe bidirectional printers wherein a positional error in reciprocal movement is calculated on the basis of the time from the start of driving of the print head to the start of printing.
  • the present invention also provides a serial recording method as claimed in claim 18.
  • An embodiment of the present invention provides a serial recording apparatus capable of performing bidirectional recording with high precision regardless of load variations in a carriage motor.
  • An embodiment of the present invention provides a serial recording apparatus capable of automatically adjusting a recording error in bidirectional recording.
  • the difference between the reference positions detected by the position detecting means in the forward and reverse directions is calculated and a print position error in bidirectional recording can be automatically adjusted by using this difference.
  • Fig. 1 shows an arrangement of the first embodiment obtained when the present invention is applied to an ink-jet recording apparatus
  • Fig. 2 shows an arrangement of its recording head
  • Fig. 3 is a block diagram showing an electrical arrangement of a recording head drive system.
  • a head cartridge 14 has an integral structure consisting of a recording head H constituted by using a heater board to be described with reference to Fig. 2 later, and an ink tank serving as an ink supply source.
  • the head cartridge 14 is fixed on a carriage 15 by a press member 41. These members can be reciprocated along shafts 21 along their longitudinal direction.
  • An ink ejected from the recording head reaches a recording medium 18, whose recording surface is regulated by a platen 19, through a small gap formed with the recording head H, thereby forming an image on the recording medium 18.
  • An ejection signal corresponding to image data is supplied from an appropriate data supply source to the recording head H through a cable 16 and a terminal connected to it.
  • At least one head cartridge (two in the illustrated embodiment) can be arranged in accordance with the number of ink colors.
  • the ink-jet recording apparatus also includes a pulse motor 17 for scanning the carriage 15 along the shafts 21, and a wire 22 for transmitting a driving force of the motor 17 to the carriage 15.
  • This apparatus further includes a feed motor 20, connected to a platen roller 19, for feeding the recording medium 18, and an HP (home position) sensor 4 for detecting the home position of the carriage 15.
  • the HP sensor 4 is turned off when the carriage 15 is located in a positive direction with respect to the HP sensor 4.
  • FIG. 2 shows an arrangement of the recording head H.
  • a heater board 1 comprises an electro-thermal conversion unit (ejection heater) 5 formed on a silicon substrate and a wiring 6 made of Al or the like to supply power to the electro-thermal conversion unit in accordance with film formation techniques.
  • a ceiling plate 30 having partition walls for defining liquid paths (nozzles) 25 for a recording liquid is adhered to the heater board 1 to constitute the ink-jet type recording head H.
  • a recording liquid (ink) is supplied to a common liquid chamber from a supply port 24 formed in the ceiling plate 30 and is supplied to each nozzle 25.
  • the heater 5 is heated upon its energization, a bubbling phenomenon occurs in the ink filled in the nozzles 25.
  • An ink droplet is ejected from each ejection port 26 upon growth and contraction of the bubble.
  • a pulse motor drive circuit 31 drives the pulse motor 17.
  • a CPU 32 supplies a control signal to the pulse motor drive circuit 31 to drive the pulse motor 17, as will be described later.
  • a ROM 33 stores a control sequence (to be described later) of the CPU 32.
  • a RAM 34 has a counter (to be described later) and temporary data storage areas A and M, and the like.
  • initialization (101) is performed upon a power-on operation, and then direction-acceleration processing (102) is performed in which the pulse motor 17 is driven to drive the carriage 15 (recording head H) in a positive direction at a speed equal to acceleration in the recording mode (point A to point B in Fig. 5).
  • the counter A in the RAM 34 is set at "1" (105). Every time the recording head H is moved by one pulse at a constant speed (106), the level of the HP sensor 4 is detected (107). When the HP sensor 4 is not ON, the counter A is incremented by one (108). When the HP sensor 4 is turned on (point C in Fig. 5), the head H is moved by an arbitrary number of pulses N (109) (point D in Fig. 5). At this time, the counter A retains pulses between points B and C. Thereafter, positive direction-deceleration processing is performed (110), and movement of the recording head H is stopped (point E in Fig. 5).
  • Negative direction-acceleration processing in which the pulse motor 17 is driven in a reverse or negative direction by the same number of pulses as in positive direction-acceleration processing is performed (point E to point F in Fig. 5).
  • the counter M different from the counter A in the RAM 34 is set at "1" (112). Every time the recording head H is moved by one pulse (113), the level of the HP sensor 4 is detected (114). If the HP sensor 4 is not set in the OFF state, the counter M is incremented by one (115).
  • the recording head H is moved by ( A + N - N) pulses (117), and deceleration processing (118) is performed by the same number of pulses as that in positive direction-acceleration processing (point A in Fig. 5A).
  • characteristics in consideration of the characteristic value B caused by a play and the like are indicated by a dotted line in Fig. 5.
  • An error amount X with respect to the load upon power-on operation is determined as described above.
  • Fig. 7 illustrates the above operations.
  • the actual recording head positions are plotted along the abscissa.
  • the point (i.e., point O) upon completion of acceleration processing in the negative direction is sifted to the right from the point (i.e., point J) of the end of printing in the positive direction.
  • the printing range P-R upon completion of correction almost coincides with the printing range I-J in the positive direction.
  • the recording head H is moved in the positive and negative directions under the same conditions as in the recording mode upon the power-on operation.
  • the numbers of pulses until a moment at which the recording head H crosses the HP sensor 4 are counted, and print error correction in both the directions is performed in accordance with the calculated difference. Without increasing cost or performing adjustment, print error correction with high precision in both the directions can be performed.
  • the above correction operation is always performed upon each power-on operation, appropriate correction can be performed against variations in drive load and particularly changes in ink tank weight over time.
  • the positive recording area is set to be equal to the negative recording area.
  • these areas may be different from each other, and printing with a minimum distance can be similarly performed.
  • correction is performed when the recording head is moved in the negative direction.
  • correction may be performed when the recording head is moved in the positive direction, as shown in Fig. 8.
  • the recording head is moved by the X pulses corresponding to the correction value. In this state, recording is performed, and the recording head is moved by (K - X) pulses. Thereafter, the recording head is decelerated and finally stopped. In printing in the negative direction, upon completion of acceleration processing, the recording head is moved by K pulses to ensure a correction area. Recording is then performed, and the recording head is decelerated and finally stopped. In this manner, even if the recording head is moved by pulses in the positive direction, the same effect as in the above embodiment can be obtained.
  • This embodiment has the same mechanical structure as in the embodiment shown in Fig. 1, and the block diagram of an electrical arrangement of a drive system for a recording head H is shown in Fig. 9.
  • the drive system includes a pulse motor drive circuit 31 for driving a pulse motor 17, a CPU 32 for supplying a control signal to the pulse motor drive circuit 31 to drive the pulse motor 17, as will be described later, a ROM 33 for storing a control sequence (to be described later), and a RAM 94 having counters (to be described later) or temporary data storage areas P, Q, and X, and the like.
  • the pulse motor 17 has a resolution per pulse corresponding to a drive amount of 1/60" of the recording head H.
  • a print area corresponds to 480 pulses (8").
  • a correction value detection operation (preliminary scanning) of this embodiment will be described with reference to a flow chart in Fig. 10 and a movement diagram of the recording head shown in Fig. 11.
  • initialization (401) is performed upon power-on operation, and positive direction-acceleration processing (402; point A to point B in Fig. 11) is performed wherein the pulse motor 17 is driven to drive a carriage 15 (recording head H) in a positive direction at a speed equal to that in a recording mode.
  • a movement pulse count V (e.g., 180; 1/3 of 480 pulses corresponding to the print area) in the positive direction is set in a movement pulse counter U in the RAM 94 (403).
  • the count V is a value stored in the ROM 33 and corresponding to a pulse count representing a distance up to point E sufficiently spaced apart from point B in Fig. 11, passing through an HP sensor 4.
  • the counter P is set to be "0" (404). Every time the recording head H is moved by one pulse at a constant speed (405), the level of the HP sensor 4 is detected (406). If the HP sensor 4 is set in the OFF state, the counter P is incremented by one (407). This operation is repeated by V pulses (408 and 409).
  • the counter P represents a pulse count from point D to point E in Fig. 11, i.e., a period during which the sensor level is changed from the ON state to the OFF state.
  • positive direction-deceleration processing (410) is performed, and movement of the recording head H is stopped (points E and F in Fig. 11).
  • the pulse motor 17 is driven in the negative or reverse direction, and negative direction-deceleration processing (411; point G to point H in Fig. 11) is performed by the same pulse count as that in the positive direction-deceleration processing.
  • the same value V as in positive movement is set as a movement pulse count in the negative direction in the movement pulse counter U (412).
  • the counter Q is set to be "0" (413). Every time the recording head H is moved by one pulse at a constant speed (414), the level of the HP sensor is detected (415). When the level of the HP sensor is set in the OFF state, the counter Q is incremented by one (461). This processing is repeated by V pulses (417 and 418). At this time, the counter Q stores a pulse count from point H to point J in Fig.
  • the drive system since the drive system is not an ideal rigid body, the drive system has a characteristic value Y (points A to L and points F to G in Fig. 11) such as a play.
  • Y points A to L and points F to G in Fig. 11
  • the recording head H cannot immediately respond to the pulses supplied to the pulse motor 17, a level inversion position of the HP sensor 4 is shifted from point C to point D in the positive direction and from point I to point J in the negative position, thereby obtaining condition Q > P.
  • this error value is given as X
  • This value is stored in the RAM 94 as a correction value (420). The error amount X for the load upon the power-on operation can thus be obtained.
  • a correction sequence (recording scanning) during actual recording will be described with reference to a flow chart in Fig. 12 and a recording head movement chart shown in Fig. 13.
  • a print instruction upon reception of a print instruction (501), positive direction-acceleration processing is performed (502; point A to point B in Fig. 13).
  • the recording head is moved by Z pulses to obtain an area for ensuring a correction area, and the recording head is moved by the correction value corresponding to X pulses (503; from point B to points C and D in Fig. 13).
  • the area Z is set to have a larger value than a sum of a maximum value of the assumed correction value X and the characteristic value Y caused by a play.
  • Recording is then performed in accordance with recording data (504; point D to point E in Fig. 13), and the recording head is moved by (Z - X) pulses to adjust the correction area upon recording (505; point E to point F in Fig. 13).
  • positive direction-deceleration processing is performed (506; point F to point G in Fig. 13)
  • the paper is fed (507).
  • Recording is then performed in accordance with recording data (511; point L to point M in Fig. 13).
  • the recording head is moved by ( Z - X - Y) pulses (505; point M to point N in Fig. 13).
  • Negative direction-deceleration processing is performed by the same pulse count as in the positive direction-acceleration processing (513).
  • Fig. 13 illustrates the positions of the recording heads H in the above operations. This processing is performed so that the printing range in the positive direction falls between point D and point E, and that in the negative direction falls between point M and point L. In practice, however, an error corresponding to X occurs as in detection of the correction value. The printing range in the positive direction falls between point C and point E', and that in the negative direction falls between point M' and point K.
  • An actual print start position can be kept to be point C even if the correction value X upon detection is changed by load variations such as differences between apparatuses and deteriorations over time. This is because error correction is performed in both the positive and negative directions.
  • the positive recording area is set to be equal to that of the negative recording area.
  • the positive recording area may be different in size from the negative recording area, and printing with a minimum distance can be performed.
  • the same control as described above can be performed to update the correction value.
  • the correction value calculation control described above can be performed prior to recording.
  • the pulse count (i.e., a switching count of excitation phases) of the pulse motor 17 is counted.
  • ink ejection dot
  • error correction precision can be given as 1/360", thereby further improving error correction precision.
  • correction values X1, X2,... corresponding to the respective speeds are obtained, thereby performing optimal error correction at the respective speeds.
  • the present invention is not limited to a pulse motor as a drive source for the recording head (carriage), but can employ, e.g., a DC motor.
  • the HP sensor can be arranged outside the acceleration or deceleration processing area.
  • a preliminary scanning amount is not limited to a specific value. However, in consideration of preliminary scanning time and precision, this amount is preferably set to be 1/2 to 1/4, particularly 1/3, of the recording width.
  • the present invention can equally applied to, e.g., a thermal transfer recording system using a thermal head, a heat-sensitive recording system, and an impact recording system using a daisy wheel, a wire dot, or the like.
  • a thermal transfer recording system using a thermal head e.g., a thermal head, a heat-sensitive recording system, and an impact recording system using a daisy wheel, a wire dot, or the like.
  • an excellent effect can be obtained in the ink-jet recording apparatus utilizing heat energy, as described in the above embodiments.
  • high-density, high-precision recording can be performed.
  • the on-demand type is effective because, by applying at least one driving signal which gives rapid temperature elevation exceeding nucleus boiling corresponding to the recording information on an electricity-heat converters arranged corresponding to the sheets or liquid channels holding liquid (ink), heat energy is generated at the electricity-heat converters to effect film boiling at the heat acting surface of the recording head, and consequently the bubbles within the liquid (ink) can be formed corresponding one by one to the driving signals.
  • the constitution of the recording head in addition to the combination constitutions of discharging orifice, liquid channel, electricity-heat converter (linear liquid channel or right angle liquid channel) as disclosed in the above-mentioned respective specifications, the constitution by use of U.S. Patent 4,558,333, 4,459,600 disclosing the constitution having the heat acting portion arranged in the flexed region is also included in the present invention.
  • the present invention can be also effectively made the constitution as disclosed in Japanese Patent Laid-Open Application No. 59-123670 which discloses the constitution using a slit common to a plurality of electricity-heat converters as the discharging portion of the electricity-heat converter or Japanese Patent Laid-Open Application No. 59-138461 which discloses the constitution having the opening for absorbing pressure wave of heat energy correspondent to the discharging portion.
  • the present invention is effective for a recording head of the freely exchangeable chip type which enables electrical connection to the main device or supply of ink from the main device by being mounted on the main device, or for the case by use of a recording head of the cartridge type provided integrally on the recording head itself.
  • a restoration means for the recording head, a preliminary auxiliary means, etc. provided as the constitution of the recording device of the present invention is preferable, because the effect of the present invention can be further stabilized.
  • Specific examples of these may include, for the recording head, capping means, cleaning means, pressurization or aspiration means, electricity-heat converters or another heating element or preliminary heating means according to a combination of these, and it is also effective for performing stable recording to perform preliminary mode which performs discharging separate from recording.
  • the present invention is extremely effective for not only the recording mode only of a primary color such as black etc., but also a device equipped with at least one of plural different colors or full color by color mixing, whether the recording heat may be either integrally constituted or combined in plural number.
  • the ink is exemplified as a liquid.
  • an ink which is solidified at room temperature or less is generally temperature-controlled to be softened or liquefied at room temperature or in a temperature range of 30°C to 70°C, thereby controlling the viscosity of the ink to fall within a stable ejection range. For this reason, an ink need only be in a liquid phase when a recording signal is applied.
  • an ink which positively prevents temperature increase by heat energy by using it as energy for changing a state from a solid phase to a liquid phase of the ink, or by using an ink which is solidified in an exposed state for the purpose of evaporation prevention, heat energy is applied to the ink in accordance with a recording signal, and the liquefied ink is ejected.
  • An ink which starts solidifying before it reaches the surface of a recording medium may also be used. That is, an ink which is liquefied only upon application of heat energy may be used in the present invention.
  • an ink as a liquid or solid body stored in a recess or through hole of a porous sheet may be opposed to an electricity-heat converter.
  • a most effective method for each ink is a film boiling method.
  • the ink-jet recording apparatus is used in an application form as an image output terminal of data processing equipment such as a computer, a copying apparatus in combination with a reader and the like, and a facsimile apparatus having transmission and reception functions.
  • Fig. 14 is a schematic block diagram in which a recording apparatus of the present invention is applied to a data processing apparatus having functions as a wordprocessor, a personal computer, a facsimile apparatus, and a copying apparatus.
  • a controller 201 controls the overall operation of the apparatus and includes a CPU (e.g., a microprocessor) and has various I/O ports. The controller 201 outputs control and data signals to the respective circuit components or receives control and data signals from these components.
  • a display 202 displays various menus, document information, and image data read by an image reader 207 on the display screen.
  • a transparent pressure-sensitive touch panel 203 is arranged on the display 202. When the surface of the touch panel 203 is pressed with a finger or the like, a desired item or a coordinate position can be input on the display 202.
  • An FM (Frequency Modulation) sound source 204 stores music information generated by a music editor or the like in a memory 210 or an external memory device 212 in the form of digital data, reads out stored data from the memory and the like, and performs FM modulation of the readout data.
  • An electrical signal from the FM sound source 204 can be produced as sounds from a speaker 205.
  • a printer 206 is constituted by the recording apparatus of the present invention as an output terminal for a wordprocessor, a personal computer, a facsimile apparatus, and a copying machine.
  • the image reader 207 photoelectrically reads original data and inputs the read data.
  • the image reader 207 is arranged in an original convey path and reads a facsimile original, a copying original, and various other originals.
  • a FAX transmitter-receiver 208 performs facsimile transmission of original data read by the image reader 207, receives a transmitted facsimile signal, and decodes the received facsimile signal.
  • the FAX transmitter-receiver 208 has an interface function with an external device.
  • a telephone 209 has various telephone functions such as normal telephone functions and automatic telephone answering functions.
  • the memory 210 includes a ROM for storing a system program, a manager program, other application programs, character fonts, and a dictionary, and a video RAM, and further stores application programs loaded from the external memory device 212 and document information.
  • a keyboard 211 is used to input document information and various commands.
  • the external memory device 212 uses a memory medium such as a floppy or hard disk. Document information, music or voice information, and user application programs are stored in the external memory device 212.
  • Fig. 15 is an external perspective view of the data processing apparatus shown in Fig. 14.
  • a flag display panel 301 is obtained by using a liquid crystal or the like and displays various menus, graphic data, and document data.
  • the touch panel 203 is formed on the display 301. Upon depression of the surface of the touch panel 203 with a finger or the like, coordinate data or an item can be input.
  • a handset 302 is used when the apparatus serves as a telephone.
  • a keyboard 303 is detachably connected to the main body through a cord and is used to input various document data and other data.
  • the keyboard 303 has various function keys 304.
  • a floppy disk slot 305 is formed in the main body for accessing data from the external memory device 212.
  • An original is placed on an original table 306 and is read by the image reader 207.
  • the read original is discharged from the rear portion of the apparatus.
  • the received data is recorded at an ink-jet printer 307.
  • the display 202 may be constituted by a CRT display.
  • a flat panel such as a liquid crystal display utilizing a ferromagnetic liquid crystal is preferred to obtain a compact, low-profile, lightweight display.
  • various data input from the keyboard 211 is processed by the controller 201 in accordance with a predetermined program.
  • the processed data is output as an image at the printer 206.
  • facsimile data input from the FAX transmitter-receiver 208 through a communication line is received and processed by the controller 201 in accordance with a predetermined program.
  • the processed data is output as a reception image at the printer 206.
  • an original is read by the image reader 207, and the read original data is output as a copy image at the printer, 206 through the controller 201.
  • original data read by the image reader 207 is transmitted by the controller 201 in accordance with a predetermined program.
  • the processed data is sent to the transmission line through the FAX transmitter-receiver 208.
  • the data processing apparatus may be an integral unit including an ink-jet printer, as shown in Fig. 16. In this case, a more portable apparatus can be obtained.
  • the same reference numerals as in Fig. 15 denote the same parts in Fig. 16.
  • the recording apparatus of the present invention is applied to the multifunctional data processing apparatus as described above to obtain a high-quality recorded image with low noise at high speed, thereby further improving the functions of the data processing apparatus.
  • the positions of the recording head in the positive and negative directions can be accurately controlled regardless of drive load variations.

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  • Character Spaces And Line Spaces In Printers (AREA)
  • Ink Jet (AREA)
EP96200209A 1990-02-02 1991-01-30 Serial recording apparatus for bidirectional recording Expired - Lifetime EP0713780B1 (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP2217790 1990-02-02
JP22177/90 1990-02-02
JP2217790 1990-02-02
JP19885190A JP2941906B2 (ja) 1990-02-02 1990-07-25 シリアル記録装置
JP19885190 1990-07-25
JP198851/90 1990-07-25
EP91300699A EP0440438B1 (en) 1990-02-02 1991-01-30 Serial recording apparatus for bidirectional recording

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP91300699A Division EP0440438B1 (en) 1990-02-02 1991-01-30 Serial recording apparatus for bidirectional recording
EP91300699.5 Division 1991-01-30

Publications (3)

Publication Number Publication Date
EP0713780A2 EP0713780A2 (en) 1996-05-29
EP0713780A3 EP0713780A3 (en) 1996-08-07
EP0713780B1 true EP0713780B1 (en) 2000-04-26

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Application Number Title Priority Date Filing Date
EP96200209A Expired - Lifetime EP0713780B1 (en) 1990-02-02 1991-01-30 Serial recording apparatus for bidirectional recording

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EP (1) EP0713780B1 (ko)
JP (1) JP2941906B2 (ko)
KR (1) KR950011533B1 (ko)

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JP3840153B2 (ja) 2002-07-10 2006-11-01 キヤノン株式会社 記録装置
JP4584739B2 (ja) * 2005-02-28 2010-11-24 スター精密株式会社 記録装置
JP4781946B2 (ja) * 2006-08-31 2011-09-28 スター精密株式会社 プリンタ装置及びその制御方法

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US4550320A (en) * 1983-10-31 1985-10-29 Centronics Data Computer Corp. Carriage-mounted velocity multi-deflection compensation for bi-directional ink jet printers
JPS6227169A (ja) * 1985-07-29 1987-02-05 Oki Electric Ind Co Ltd シリアルプリンタの印字位置決め方式
JPH0784081B2 (ja) * 1986-10-09 1995-09-13 沖電気工業株式会社 シリアルドツトプリンタの往復印字アライメントの補正方法
JPH01295695A (ja) * 1988-05-23 1989-11-29 Matsushita Electric Ind Co Ltd プリンタ制御回路

Also Published As

Publication number Publication date
KR950011533B1 (ko) 1995-10-06
KR910021306A (ko) 1991-12-20
JP2941906B2 (ja) 1999-08-30
EP0713780A2 (en) 1996-05-29
JPH03272878A (ja) 1991-12-04
EP0713780A3 (en) 1996-08-07

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